None of our business
what's in your agreement.

Sign documents with blockchain proof. We verify the signatures, record the hash on Polygon, then delete everything from our server. The blockchain remembers. We don't.

Get Started

Currently in beta — free to use during the beta period.

Your e-signature platform stores your contracts on their server. If they get breached, shut down, or change their terms — your proof is at risk.

StationHash is different.

Your proof lives on the blockchain.
Not on our server. Not on anyone's server.

Upload Your Document

Create a session and upload your agreement. We encrypt it — we never read the contents.

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Invite the Other Party

Send an invite to your counterparty. They can review, comment, and upload revisions.

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Both Parties Sign

Once both sides agree, verify your email and sign. Your agreement is recorded on the Polygon blockchain.

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Verify Anytime

Anyone with the original file can verify it on-chain. No account needed. The blockchain proof is permanent.

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Polygon Blockchain

Tamper-proof on-chain proof

AES-256-GCM Encrypted

Military-grade encryption with authentication — files are unreadable at rest

Public Proof, Private Data

Only SHA-256 hashes go on-chain — verifiable by anyone, readable by no one

Auto-Deleted

Data removed after 30 days

Ready to secure your agreements?

Upload a document, invite your counterparty, and get blockchain-verified proof in minutes.